Doc updates
also collect cpu percentage
rename the module from processmemory to processresources
rename class from Memory to Resources
simple cpu usage test

Conflicts:
	src/collectors/processresources/test/testprocessresources.py
collect process data at iteration time to minimize race condition
ipvs - remove exact flag, fix to handle non interger values
snmpinterface - fix typo. fix SNMP value name to indicate 64 bit.
Update diskusage to calculate like iostat
Keep python 2.4 compatibility
Merge pull request #270 from disqus/iostat-parity

Update diskusage to calculate like iostat
Fix up unit tests for disk usage collector to be correct now
PEP8
Fixes #271, this fixes the import namespace collision issue after moving to the official librato library
fixed scoping issues in LibratoHandler
Merge pull request #272 from briceburg/master

fix scoping in LibratoHandler
LibratoHandler: normalized variable naming and added maximum interval to
queue measurements until submitting.
LibratoHandler: allow regex filtering of submitted measurements
Merge pull request #273 from briceburg/master

LibratoHandler: allow regex filtering of submitted measurements
Simple only CPU option 'simple=True' which allows for only aggregate cpu percentile usage logging instead of mucho verbosity
allow local revision identifiers, if not present ignored